Operating mechanism for net-making machines



-z 1930- s. KAKUDA 1,784,188

' OPERATING MECHANISM FOR NET-MAKING MACHINES Filed May 2, 1927 6Sheets-Sheet l IN V EN TOR.

Ka/du/ BYWQ/Qw A TTORNEY.

1930- 8 s. KAKUDA 1,784,188

OPERATING rqEcflANIsM FOR NET MAKING MACHINES Filed May 2, 1927 6Sheets-Sheet 2 Fiy- 2, 67 60 J9 3? 666842 10 J5mw mmvron A TTORNEY.

9, 1930 s. KAKUDA' 1,784,188

OPERATING MECHANISM FOR NET MAKING MACHINES Filed May 2, 1927 6 SheetsSheet 5 Fig 3;

IN V EN TOR.

ATTORNEY.

Dec. 9, 1930. s. KAKUDA 1,734,188

' OPERATING MECHANISMFOR NET MAKING MACHINES Filed May 2, 1927 6Sheets-Sheet 4 ATTDRNEK Dec; 9, 1930.

s. KAKUDA 1,784,188

OPERATING MECHANISM FOR NET MAKING MACHINES Filed Mai; 2, 1927 eSheets-Sheet 5 ATTORNEY.

Dec. 9, 1930. s. KAKUDA OPERATING MECHANISM FOR NET MAKING MACHINESFiled May 2, 1927 6 Sheets-Sheet 6 Jim I ll ll INVENTOR.

fi m/ A TTORNEY.

Patented Dec. 9, 1930 UNITED STATES-- S AIBEI .KAKUDA, OF HIBOSHIIA-KEN,JAPAN, ASSIGNOR TO SAIBI MOJIAMI KABU- PATENT OFFICE SHIKI KAISHA,OFHIBOS HIIMA-KEN, JAPAN, A CORPORATION OF JAPAN ornna'rmearncnamsnnonjnar-maxmemacnnms Applicationrfllejd Kay ,2, 1921. Serial No.188,291; 7

3 This invention relates to improvements in operating mechanisms fornet-making ma chines, in whichthe knotless netting fabric, such asmay beused forfishing and other purposes, is made, and for its object toprovide an operating mechanism adapted for mechanically'taking up theseveral steps required to form anetting fabric of the knotless t r Theoperating mechanism accordingito the present invention is mainlydesigned for the use in well known net-making machines of such a kind inwhich is employed'a working platform composed of an upper and lowerplatform, each" of which platforms consists of a stationary plate, areciprocating plate positioned substantially flush and in closecontact'with the said stationary plate, both plates being provided witha series ofworking grooves connected by an intermediate groove extendingacross the said twoplates, the intertwisting operation of strands oftwine being accomplished by the rotation of the strand carriersdelivered upon the first named grooves whilst the interlocking operationof the strands upon the second named grooves, means being providedwhereby the reciprocating plate is shifted during the course of theintertwisting operation.-

In order that this invention'may be clearlyunderstood, reference may behad to the appended explanatory sheets of drawings upon which A p Fig. 1is a plan view of the mechanism, with the working platform partly brokenaway.

Fig. 2 is a sideview.

Fig. 3 is an enlarged plan View of the work- 7 ing platform partlybroken away. n

Fig. 4 is an enlarged plan view showing the parts ofthe connecting gearsbetween two intertwisting shafts and reversing gears for the same.

Fig. 5 is an enlarged plan'vi ew showing a mechanism for shiftingtoothedwheels.

Fig. 6 is an enlarged end" view, lookin in the direction of the arrowon' line VIII V III- in Fig. 5.

Fig. 9 is a diagram illustrating the cycle of operations of the machine.7 v

A net-making machine of the kind referred to above is provided with aworking platform comprising an u per and lower platform. The upper platorm is formed in two parts, namely,'a fixed portion which is termed beoperated. The working groove 3 consists of three circular channels a, band c'which are arranged in proximity to each other and extendtransversely'across the plates in severalrows, so as to provide circularcorrugated grooves therein, the intermediate channel 0 extending to boththe stationary plate 1 and reciprocating plate 2. lVithin each group ofthe said three channels which constitute the working grooves, asmentioned above, is inserted a cam roller. 5 having convex surface d andconcave surface 6; The cam roller is supported by'a supporting arm 6,Fig. 1, extending downwardly to the lower platform, so that whenallrollers are positioned Within the respective grooves the concave wallsof theintermediate rollers will be engaged by the corresponding convexwalls of theother two rollers. The construct-ion of the lower platformis identical with that of the said upper platform. In order to permitfree movement of the reciprocating plate 2,'theintermediate cam rollersare made in two halves, as indicated-by 5a and 5b. In this case. onlythe half 5a, dealing with the grooves belonging to the stationary plate,is secured to the supporting arm 6 whilst the other half 56, dealingwith the grooves belonging to thereciprocating plate, is loosely carriedby the supporting arm 6 in any suitable'manner such-as by resting itupon a" projection (not shown) formed upon the endof the arm 6. I Ineach of the two side working grooves and within'the empty spaces betweenthe upper concave surface of the rollers and the walls of the respectivegrooves, is inserted a working head 7, of a shape substantiallycomplementary to that of the said empty spaces, and adapted to carry astrand carrier. With the arrangement of the parts as described above,each pair of the strands are intertwisted by rotation of the two siderollers and consequential rotation of each pair of the working heads 7.Thus, after each pair of the strands has been intertwisted through acertain length, all the working heads are stopped in a position todeliver from the two inner side working heads to the intermediategrooves. Then the strands from each pair of the working heads deliveredto the intermediate grooves are crossed with each other by the operationof interchanging the position of the said working heads by turning theintermediate rollers 180 degrees in one direction, for instance, in aclockwise direction while the side rollers are at rest. Then thereciprocating plate 2 is moved through a distance corresponding to thepitch of the working grooves, or the side rollers are turned through anangle of 860 degrees in the reverse direction to that of the rotationduring the intertwisting operation, that is in a counterclockwisedirection. This will cause each pair of the strands on the working headsdelivered to the side grooves to be intertwisted one turn. Theintermediate rollers will be then turned again 180 degrees in the samedirection as before namely in a clockwise direction. This will causeeach pair of the strands to resume its original position, each pair ofthe strands on the working heads delivered to the intermediate groovesbeing crossed with each other, and upon resuming the intertwistingoperation of the strands by rotating the side rollers, the interlockingof the strands will be completed. After each completion of theinterlocking of the strands, the reciprocating plate 2 will be moved adistance corresponding to the pitch of the working grooves and theoperation as described above will be repeated. The net as formed istaken up by means of a take-up roller 8 shown in Figs. 1 and 2.

The invention provides mechanism, simple and etficient to'eifect theabove described operations in which a driving shaft 9, driven from aprime mover through suitable means, for instance, a pulley 65, a shaft66 and toothed wheels 67, 68 carries partly toothed gear sets 10, 11, 12and 13 fixed thereto, each of which sets consists of three partlytoothed wheels assembled together as shown in Figs. 1, 2 and5.

The gear set 10 serves for rotating shafts 14 and 15 termedintertwisting shaft for rotating the side rollers only during theintertwisting operation of the strands, otherwise they impart norotation to the said intertwisting shafts, and for that purpose areprovided withteeth which meshonly during the intertwisting operation ofthe strands with a toothed wheel 16 fixed to or integral with anothertoothed wheel 17, from which it is separated by an offset member asshown in Figs. 1, 2 and 5. The toothed wheel 16 is carried by a shaft 18termed interchanging shaft, for example by means of a sliding key and along key-way, in a manner such as to permit a sliding movementlongitudinally of the gear set 10 by means of a shifter 50 ashereinafter described, the toothed wheel 16 engaging with the said gearset 10 whilst the toothed wheel 17 engages with another toothed wheel 19fixed on one end of a shaft 20. Fixed on the other end of the shaft 20is a toothed wheel 21 which meshes with a change toothed wheel 22 fixedon one end of the intertwisting shaft 15, the change toothed wheel 22being adapted to regulate the numbers of the intertwisting of thestrands. The other intertwisting shaft 14 is connected with the'intertwisting shaft 15 through means of toothed wheels 23 and 24 fixedto the respective shafts and mesh ing with each other, as shown in.Figs. 1, 2, 3, 4.- and WVith such an arrangement, the intertwistingshaftsl and 15 will be rotated in time from the driving shaft 9. andconsequentl the side rollers will be rotated to effeet the intertwistingoperation of the strands. The connections between the intertwistingshafts and the side rollers are omitted from the drawings and are notfurther described as they form no part of the present invention.

The gear set 12 serves for rotating the interchanging shaft 18 to turnthe intermediate rollers 180 degrees in a direction for effectingcrossing of each pair of the strands on the working heads in theintermediate grooves while the intertwisting shafts are at rest afterthe strands have been intertwisted throu h a certain length, and againfor rotating the said interchanging shaft to turn the said intermediaterollers 180 degrees to cross each pair of the strands on the workingheads in the intermediate grooves, while the intertwisting shafts are atrest after the turning of the side rollers through 360 degrees in thereverse direction for interlocking the crossed strands'with the otherstrand adjacent each of them, by intertwisting each pair of the strandsthrough one turn, and accordingly are only partly toothed so as to meshwith a toothed wheel 25 intermittently in time to accomplish the abovesaid operation. The toothed wheel 25 is carried by the interchangingshaft 18, for example by means of a slid-v ing key and a long key-way,in a manner such as to permit a sliding movement longitudinally'of thesaid gear set 12 by means of a shifter 51 as hereinafter described, asshown in Figs. 1, 2 and 5. The interchanging shaft 18 is connected tothe intermediate rollers in a manner such as to be rotated with thesame, while the connections are omitted from the drawn e-w nfwflmwdescribediae form no part. of the presentinvention.

I The gear set 13 serves to rotate the inter,- twistin 'shafts 14-and;.15 for turn' *the side rollers360 degrees in the reverse irection tothat of the rotation-of the said rollers in the intertwisting operation,and accordingly is only partly toothed upon the end portions, theintermediate member being blank, in order to effect the above operationin time, and engaging with a toothed wheel 26 which is carried by theintertwisting shaft 14, for

example by means of a slidingkey anda long cordingly is so toothed as:to impart the traversing movement to the saidreciprocating plate,take-up roller'and reed to cooperate V with the intertwisting operationof the strands. The operation of the said gear set may be effecteddirectly from the gear set 10, as the operation must be in synchronismwith the intertwisting operation of the strands, but the separate gearsets are preferably employed in this construction. The gear set 11engages with a toothed wheel 27 which is carried by a shaft 28, forexample by means of a sliding key and a long keyway, in a manner such asto permit a sliding movement longitudinally of the gear Set 11 by meansof a shifter 53 as hereinafter described. Fixed to the shaft 28 is aworm 29 which meshes with a worm wheel 30 fixed to one end of a crankshaft 31, and also mounted upon said shaft 28 is a bevelwheel32whichmesheswith a bevel wheel 33 fixed to one end of a shaft 34. Theshaft 34 is connected to the shaft 35 of the take-up roller 8 throughthe medium of a worm 36, worm wheel 37, toothed wheel 86, change toothedwheel 38 whereby the speed of rotation of the take-up roller 8 may bechanged according to the size of the mesh of the net, said toothed wheelengaging a toothed wheel 39 fixed on the said shaft 35, as shown inFigs. 1, 2, 4, 5, 6 and 7. Thus it will be obvious that the take-uproller 8 will be rotated at a proper speed in t me from the gear set 11.The crank shaft 31 is provided with two cranks 40 and 41 to the end ofwhich q respectively one end of connecting'rods 42 and 43 is connected.The other ends of the said connecting rods are connected with a member44 connecting the reciprocating plate 2 in the upper working platformwith the reciprocating plate -in the lower working as describedhereinbefore. Y

the same is employed inthe machine, and ac-' platform, whereby the saidreciprocatingplates will'be moved a distance corresponding to, the pitchof the working grooves 3 in time as described hereinbefore, from thegear set 11, as shown in Fig. 2.v

Eccentrically fixed to the worm wheel 30 is a pin 45, to whichisconnected one end of a link .46, theother end of said link being pivo-.tally connected with a shaft 47, as shown in Fig. 5. The shaft 47 isconnected to a shaft 48 by means ofa pivoted lever 49, and carries fixedthereto a-shifter50for the toothed wheel 7 16 controlling theintertwistingoperation and.

a shifter 51 for the toothed wheel 25 controL ling the rotation of theinterchanging shaft 18. Theshaft 48 "carries fixed thereto a shift.

er 52 for the-toothed Wheelf26 controlling the reversing of theydirectionof rotation of the intertwisting shaft 14 andla shifter 53 forthe toothed wheel 27 as shown in Figs.;2, 4 and 5. With such anarrangement, the toothed wheels 16,25, 26 and 27 will be shifted in timeThe crank shaft 31 is provided with eccentrics 54 and 55 at the outerend. The eccentric 54 is adapted-to move the take-up roller 8 in time,as already described, by meansof a rod 56 and a pivoted lever 57 towhich the said rod 56 and the rod 35 of the take-up roller 8; areconnected. Theeccentric'55 is adapted tomove the reed 85, where sameisprovided ,over the upperworking platform, in time by mea'nsof a rod58, and a swinging lever. 59,

pivoted at 87 and connected with the rod 58 at its one arm and rods60and 61 connecting,

two arms of thelever 59 with two plate members of the reed 85respectively, as shown in Figsl and 2.

With the aforesaid construction and arrangement, it :will be-seen thatthe move ments of the intertwtisting shaft and the interchanging shaftmust 'be .exactly synchronized, otherwise the netting operation will beimpossible, or the mechanism will be out of a order, or, the properformation of thenet will not be obtained. Brake devices 62 and64,;therefore, are provided for the intertwisting shaft 15 andtheinterchanging shaft 18 respectively, in order to secure the stoppageof'the intertwisting shafts and the interchanging shaft at the desiredmoment,

as shown in Figs. 1,2, 4'and6. For example, the brake device 62 for theintertwisting shaft 15 comprises a substantially cruciform disc 63 fixedto the intertwisting shaft 15, pawls 69, 69, pivotedat 70, and havinglugs 71, 71 adjacent the respective inner end,

T-head'enlgaging with the. lugs 71, 71 as shown in; ig. 6. Said bar 73isconnected,

at its outer end, with the upper end vof a. ivoted lever 74 through. aconnecting link 5. The lever 74 is pivoted at the lower end spring 72, 72 .for pressing the pawls against the brake disc 63 anda bar 73 having awhichprojection is adapted to engage with a cam wheel 78 fiXedto orintegral with a toothed wheel 79 loosely carried by the driving shaft 9and driven by a toothed wheel 80 engaging with the same as shown inFigs. 1, 2 and 6. The toothed wheel 80 is fixed on one end of a shaft 81which is driven from the pulley through a toothed wheel 82 fixed on theother end of the shaft 81, a toothed wheel 83 loosely carried by thedriving shaft 9 and a toothed wheel 84: fixed to one end of the shaft 66of the pulley 65, as shown in Figs. 1, 2 and 5. WVit-h such anarrangement, during'the intertwisting operation the projection 7 7 onthe pivoted lever T l will engage with the circumference the cam roller7 8 and be pressed outwardly, and consequently the pawls 69, 69 will bepulled outwardly against the spring 72, 72 by the bar 73 to disengagepawls with the brake disc 63, and in the interlocking operation theprojection 7 7 will come in the depression in the cam roller 78, andconsequently the pawls will be released and engage with two sides of oneof the projected ends of the brake disc, due to the tension of thesprings 72, to arrest the rotation of the intertwisting shaft 15. Thebrake device 64 is identicalwith the brake device '62, and serves tosecure the stoppage of the rotation of the interchanging shaft 18.

With the foregoing arrangement, the cycle of operation of the machineduring one revolution of the driving shaft will be as follows: 'lVithreference to Fig. 9, at an angle A the intertwisting operation takesplace to intertwist each pair of the strands, the side rollers beingturned, at an angle B all the rollers stop, at an angle C theinterchanging operation takes place, the intermediate rollers beingturned 180 degrees, at angle D all the rollers stop, at an angle E theinterlocking operation takes place, the side rollers being turnedthrough an angle of 360 degrees in the reverse direction to that of therotation during the intertwisting operation, at an angle F all therollers stop, at an angle G the interlocking operation is completed, theintermediate rollers being turned again 180 degrees in the samedirection as before and at an angle H all the rollers stop before theintertwisting op eration at the angle A.

I claim:

1. In an operating mechanism for net-making machines, the combination ofa driving shaft, a plurality of toothed wheels fixed to the drivingshaft, each of. the toothed wheels being formed in several parts andonly partially provided with teeth, intertwisting and interchangingshafts, a plurality of slidable toothed wheels secured to theintertwisting and interchanging shafts so as to permit longitudinalsliding movement along the partly toothed wheels, each of the toothedwheels engageable with the respective partly toothed wheels, a shiftingdevice for said slidable toothed wheels, means for operating said versalof the intertwisting shafts, toothed wheels connecting one intertwistingshaft to another intertwisting shaft whereby to form the net.

2. An operating mechanism for net-mak ing machines according to claim 1,including a crank shaft with two cranks driven from oneof the partlytoothed wheels and two excentrics fixed to the crank shaft wherebymovements of the intertwisting shaft and the interchanging shaft aresynchronized with the movements of the. reciprocating plates, in theupper and lower workingplatform and movement of the takeup roller andreed is effected.

3. An operating mechanism according to claim 1, a brake device adaptedto secure the timed stoppage of the rotation of the intertwisting shaftsand the interchanging shafts to form the net.

In testimony whereof I affix my signature.

SAIBEI KAKUDA.

